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GK One-Line Question & Answer

15541+ short questions with short answers, covering every category and sub-category on the site — no long articles to scroll through. Good for a fast recap before an exam, or a few minutes of daily practice.

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Computer Fundamentals → Software and Hardware 2

Which of the following is an example of system software?
Device drivers
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Application software is designed for?
End users to perform specific tasks (word processing, browsing, gaming)
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Computer Fundamentals → Introduction to Computer 35

The ALU is part of which component?
CPU
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Random Access Memory is called 'random access' because?
Any memory location can be accessed in equal time regardless of position
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Which type of computer is used for scientific calculations requiring high speed?
Supercomputer
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Mainframe computers are used for?
Large-scale enterprise transaction processing (banking, airlines)
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Embedded computer systems are found in?
Microwave ovens, washing machines, cars, medical devices
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Which is the smallest category of computer?
Wearable/embedded
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Analog vs Digital: analog signals are?
Continuous, infinite precision values (voltage, current)
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Digitization converts?
Analog signals to digital representation (sampling + quantization)
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Sampling rate in audio is measured in?
Hz (samples per second) — CD quality is 44,100 Hz
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Bit depth in audio determines?
Resolution of each sample — CD uses 16-bit = 65,536 possible amplitude levels
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MIDI stands for?
Musical Instrument Digital Interface
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Which color model is used for printing?
CMYK (Cyan, Magenta, Yellow, Key/Black)
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Resolution of digital images is measured in?
DPI (Dots Per Inch) or PPI (Pixels Per Inch)
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Lossless compression preserves?
All original data — perfect reconstruction
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Lossy compression sacrifices?
Some data quality for smaller file size
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Which image format is lossless?
BMP (uncompressed) and PNG (lossless compressed)
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File extension .mp3 indicates?
Compressed audio file (MPEG-1 Audio Layer III)
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Which file format is used for vector graphics?
SVG (Scalable Vector Graphics)
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PDF was created by?
Adobe Systems (1992)
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Which component determines computer speed most?
CPU clock speed and architecture
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What is 'booting' a computer?
Process of starting the computer and loading the operating system
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Cold boot vs warm boot: cold boot is?
Starting computer from completely powered-off state
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The bootstrap loader is responsible for?
Loading the OS from storage into RAM during boot
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GRUB is?
Grand Unified Bootloader — bootloader for Linux systems
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Which of these represents 1 Terabyte?
1024 GB
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How many bits does IPv6 address have?
128
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CIDR notation /16 means how many bits for network?
16
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Which protocol maps IP addresses to MAC addresses?
ARP (Address Resolution Protocol)
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Broadcast IP address 255.255.255.255 is?
Limited broadcast — sends packet to all hosts on local network
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IEEE 802.3 standard defines?
Ethernet (wired LAN)
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IEEE 802.11 standard defines?
Wi-Fi (Wireless LAN)
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Bandwidth in networking means?
Maximum data transfer rate of a network connection
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Network topology refers to?
Physical or logical arrangement of devices in a network
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In bus topology, all devices connect to?
Single shared backbone cable
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Full mesh topology provides?
Maximum redundancy — every device connects to every other device
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Computer Fundamentals → Memory Units 3

Which component executes program instructions?
ROM
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ROM is non-volatile because?
It retains data even when power is removed
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Flash memory in USB drives is which type?
Non-volatile EEPROM-based storage
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